Floor brush



FIG. 1 is a perspective view of a new design for a floor brush.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing a pad substrate are for the purpose ofillustrating environmental structure and form no part of the claimeddesign.

CLAIM The ornamental design for a floor brush, as shown and described.